A55

• Fixes #158, UEFITool and UEFIFind failed to lookup pattern crossing header/body boundary
• Fixes #159, filter out more symbols in fileanems, which are prohibited by different filesystems
• Fixes #163, brining support for parsing NVRAM_NVAR_PEI_EXTERNAL_DEFAULTS_FILE_GUID
• Add more known file GUIDs
• Add basic support for FMP images